rambold



Feb. 11, 1941. A, RAMBOLD I Re. 21,714

BAG

Original Filed May 31 1935 2 Sheets-Sheet 1 2 1 14.001 RAMBWZJ,

Original Filed m 51 1935 2 Shuts-Sheet 2 Fig.8.

Reissued Feb. 11,1941 R 21,714

UNITED STATES PATENT OFFICE 21,714 BAG Adolf Rambold, Dresden, GermanyOriginal No. 2,085,509, dated June 29, 1937, Serial No. 24,416, May 31,1935. Application for reissue April 20, 1939, Serial No. 269,062. InGer- 1 many June 28, 1934 Claimsl (01. 229-531 This invention relates tobags, which may be Fig. 2 shows part of the completed bag as seenperforated and utilised as infusion packages, or from the inside.

which may be imperforate and utilised as sales Fig. 3 represents a salesbag in accordance with packages. the invention. 5 An object of theinvention is to provide a new- Fig. 4 illustrates a fu and improved bagin which a tight seal is ob- Fig. 5 shows diag am ti a y Part of a bagtained without the use of adhesive. in plan in unfolded condition, butwith the fold- A glueless bag in accordance with the invening li esindicated. tion is made from an integral blank of material F g- 6 is a fo t e e at o the after e 1 comprising a smooth continuous'bottom and atnarrow side walls have been'formed. least two opposite smooth continuoussides, at g is a S de e v t on Corresponding t least two other sidesbeing formed by folded lat- Fig. 8 S oWS e bag in t mp n V e t eralportions'of said continuous sides, an outer folding being completed atone Sideportion of the bottom being thrust between each 9 s a e evat ncorresponding o two of said lateral portions, said outer portion F 10 sa e elevation o e fi ed ba 15 of the bottom being over-and-over foldedto-. p rt being broken awaygether with said lateral portions, the edgeof In th pr du f h v a rec an ular said outer bottom portion beingretained near blank 15 utilised, which is folded in known mailthe edgesof the adjacent lateral portion thereby n m ly. -f p a r l r corautomatically to form when folded a tight scam. I e bottom of e bag o ep uced s n- 20 The method of making the bag comprises folddieeted tIntegral Parts of e bottom D 0 ing the blank into substantially U-shapeto form i ins at the w narrow Sides are indicated y a smooth continuousbottom for the bag, thrustthe reference numerals 2 and w l the p m eachouter portion of the tt up b t tions of the blank which are folded upfrom the the adjacent lateral portions, locating and mainbottom areindicated at 4 and From h fi 25 taining the edge of each outer bottomportion ures it will be clear that the part 2 of the bottom near theedges of the adjacent lateral portions, Which extends beyond the a a a ot e ba folding said lateral .portions and the intervening is thrustupwards between the laterally D l'eetouter bottom portions over and overupon thems edges of the upstanding Walls 4 a d 5 whic selvesautomatically to close the seams, and flatare to be folded together onto the core- An 30 tening each of the folded rti inner triangularportion of the projecting base The invention further consists in doublysecuris pressed upwardly to s t e C re W ile the ing a holder string tothe bag by the clamping remainder of said projecting base is doubledupaction of a. staple, for which purpose th end of wardly upon itselfinto parallelism with the latthe string is placed over the edge of thebag loope y pr jec in up nd w ll he e e of 35 fashion and is gripped bythe staple at t points, each outer base portion being retained near theA notch may be provided in the edge of the bag edges of the laterallyprojecting upstanding walls. for guiding and securing the holder string.Consequently when these walls are folded to- In order that the bag may butili d as an gether twice for forming a tight side scam the fusionpackage, it is necessary that liquid may bottom portion 2 locatedbetween them is folded pass therethrough, and i1 11; i t inherentlytwice therewith. The same applies to the botpervious, as are for examplefabric materials, it tom Portion The folding lines a e indicated isprovided ith apertures F examme, t at 6, l and 8. It is noteworthy thatthe lower bag may be perforated in known manner. edge 9 of the folding(Figs. 9 and 10) is nearly 5 An advantage of the invention is that theadevel W t e botto I of the b hesives hitherto utilised for forming bagsor in- The bag so made may be stapled, care being fusion packages areavoided, thereby making it taken that the staples are applied at pointswhere possible to form a cheap packing harmless for as many layers ofmaterial as possible may be the contents. gripped by them (see forexample the staple 'lll Various embodiments of the invention are illusinFi 10) 50 trated in the accompanying drawings. Adequate tightness ofsealing is obtained owing Fig. 1 shows how that portion of the bag bottothe fact that the upturned bottom flaps 2 and tom projecting over theground area is to be 3 (as clearly shown in Fig. 6) extend substanthrustbetween the projecting ends of the side tially to the outer edge of thesides to be folded 5| walls to be folded flat on to the core. toiether.

the top closure, staples l8 (Fig. 4) are employed. In this connectioncare must be taken thatrthe longitudinal fold is engaged by theoutermost staples. cured in position by means of staples, a perfectlytight sealing down of the bag is assured. The staples [8 may also beutilised for fixing a label string i9, orfor fixing a handle formed of astring and running from one outer-staple to the other. I

The holder string is preferably fixed by placing one of its endsloop-fashion over the edge of the bag and gripping 'it by a staple attwo points, whereby safe connection is assuredbetween the string and thebag.

If it is required to pass the string round the bag, a notch is providedat the top folding, preferably above the stapling of the edge of thebag, in which the other end of the holder string may be detachablyfixed. The notch must be so disposed that the seal of the bag is notdam-. I aged and the contents thereof cannot escape.

This arrangement gives the assurance that the string, particularly if itis provided with a label and if this is pushed under the string loop,retains its position.

If the bag described, which is preferably made of cellulosic material,is utilized as an infusion package, it may be provided in known mannerwith holes 20 (Fig. 4), which are adapted to permit entry of the waterand "drawing" of the contents.

I claim:

1. A bag of polygonal cross section made from an integral blank ofmaterial, comprising a smooth continuous bottom and at least two 0?-posite smooth continuous sides, at least two By the double top fold,which is se- 21,714 In order to provide an absolutely safe seal at othersides being formed by folded lateral portions of said continuous sides,an outer portion of the bottom being thrust between each two of saidlateral portions, said outer portion of the bottom being over-and-overfolded together with said lateral portions, the edge of said outerbottom portion being retained near the edges of the adjacent lateralportions thereby automatically to form when folded a tight seam.

2. A bag according to claim 1, wherein 'the by the folded portionsthereof.

3. A bag comprising a rectangular blank of sheet material foldedU-fashion with each outer portion of the bottom thrust between the twolateral portions at the same side, the outer portion of the bottom beingover-and-over folded together with said lateral portions, and the edgeof said outer portion being retained near the edges of the lateralportions thereby automatically to form when folded a tight seam.

4. The method of making a bag from a unitary blank of material whichcomprises folding said blank into substantially U-shape to form a smoothcontinuous bottom for the bag, thrusting each outer portion of thebottom up between the adjacent lateral portions, locating andmaintaining the edge of each outer bottom portion near the edges of theadjacent lateral portions,

folding said lateral portions and the intervening edges of the blank lietogether and are covered I outer bottom portions over and over uponthemselves automatically to close the seams, and flattening each of thefolded portions.

5. The method of making a bag according to claim 4, including the stepof stapling the flattened folded portions.

ADOLF RAMBOLD.

